During the 1795 storyline when the Countess Dupre was reading the tarot cards for Vicky, Vicky gave her date of birth as March 4, 1773. (of course we know she was off with the year, about over 150 years I'd say!)
Peter Bradford's birthday was January 18th, 1770, and his date of death was given as April 3rd, 1796.
Cassandra